AspNetEdit.Editor.Persistence.AspParser.GetInclude C# (CSharp) Method

        bool GetInclude(string str, out string pathType, out string filename)
        {
            pathType = null;
            filename = null;
            str = str.Substring (2).Trim ();
            int len = str.Length;
            int lastQuote = str.LastIndexOf ('"');
            if (len < 10 || lastQuote != len - 1)
                return false;

            if (!StrUtils.StartsWith (str, "#include ", true))
                return false;

            str = str.Substring (9).Trim ();
            bool isfile = (StrUtils.StartsWith (str ,"file", true));
            if (!isfile && !StrUtils.StartsWith (str, "virtual", true))
                return false;

            pathType = (isfile) ? "file" : "virtual";
            if (str.Length < pathType.Length + 3)
                return false;

            str = str.Substring (pathType.Length).Trim ();
            if (str.Length < 3 || str [0] != '=')
                return false;

            int index = 1;
            for (; index < str.Length; index++) {
                if (Char.IsWhiteSpace (str [index]))
                    index++;
                else if (str [index] == '"')
                    break;
            }

            if (index == str.Length || index == lastQuote)
                return false;

            str = str.Substring (index);
            if (str.Length == 2) { // only quotes
                OnError ("Empty file name.");
                return false;
            }

            filename = str.Trim ().Substring (index, str.Length - 2);
            if (filename.LastIndexOf  ('"') != -1)
                return false; // file=""" -> no error

            return true;
        }